GB8806812D0 - Telephone electronic combination lock - Google Patents

Telephone electronic combination lock

Info

Publication number
GB8806812D0
GB8806812D0 GB888806812A GB8806812A GB8806812D0 GB 8806812 D0 GB8806812 D0 GB 8806812D0 GB 888806812 A GB888806812 A GB 888806812A GB 8806812 A GB8806812 A GB 8806812A GB 8806812 D0 GB8806812 D0 GB 8806812D0
Authority
GB
United Kingdom
Prior art keywords
combination lock
electronic combination
telephone electronic
telephone
lock
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
GB888806812A
Other versions
GB2220323A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ballabon P M
Original Assignee
Ballabon P M
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ballabon P M filed Critical Ballabon P M
Priority to GB8806812A priority Critical patent/GB2220323A/en
Publication of GB8806812D0 publication Critical patent/GB8806812D0/en
Publication of GB2220323A publication Critical patent/GB2220323A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/66—Substation equipment, e.g. for use by subscribers with means for preventing unauthorised or fraudulent calling
    • H04M1/667—Preventing unauthorised calls from a telephone set
    • H04M1/67—Preventing unauthorised calls from a telephone set by electronic means
    • H04M1/673—Preventing unauthorised calls from a telephone set by electronic means the user being required to key in a code

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Signal Processing (AREA)
  • Lock And Its Accessories (AREA)
GB8806812A 1988-03-22 1988-03-22 Telephone electronic combination lock Withdrawn GB2220323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8806812A GB2220323A (en) 1988-03-22 1988-03-22 Telephone electronic combination lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8806812A GB2220323A (en) 1988-03-22 1988-03-22 Telephone electronic combination lock

Publications (2)

Publication Number Publication Date
GB8806812D0 true GB8806812D0 (en) 1988-04-20
GB2220323A GB2220323A (en) 1990-01-04

Family

ID=10633881

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8806812A Withdrawn GB2220323A (en) 1988-03-22 1988-03-22 Telephone electronic combination lock

Country Status (1)

Country Link
GB (1) GB2220323A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6047573A (en) * 1998-12-03 2000-04-11 Martinez; David Telephone lock box

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1569257A (en) * 1975-11-17 1980-06-11 Murray L Q Of a telephone instrument telephone security device for preventing unauthorised use
GB1579873A (en) * 1978-05-31 1980-11-26 Murray L Q Telefone security device for preventing unauthorised use of a subscribers set
GB2086187A (en) * 1980-10-09 1982-05-06 Standard Telephones Cables Ltd Toll barring
IE54755B1 (en) * 1983-09-08 1990-01-31 Lake Electronics Ltd Telephone security device
US4724537A (en) * 1984-09-18 1988-02-09 Harris Corporation Method and apparatus for managing the use of an electronic lock for a mobile radio telephone
WO1987007800A1 (en) * 1986-06-13 1987-12-17 Keith Askham Telephone security system

Also Published As

Publication number Publication date
GB2220323A (en) 1990-01-04

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)